JB4 Plug & Play Piggyback Tuning Box for Audi S5 & SQ5 B10 (2025+) 3.0 TFSI V6 EA839 - App Controlled CANbus Module
JB4 Plug & Play Piggyback Tuning Box for Audi S5 & SQ5 B10 (2025+) 3.0 TFSI V6 EA839 - App Controlled CANbus Module
JB4 Plug & Play Piggyback Tuning Box for Audi S5 & SQ5 B10 (2025+) 3.0 TFSI V6 EA839 - App Controlled CANbus Module
JB4 Plug & Play Piggyback Tuning Box for Audi S5 & SQ5 B10 (2025+) 3.0 TFSI V6 EA839 - App Controlled CANbus Module
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JB4 Plug & Play Piggyback Tuning Box for Audi S5 & SQ5 B10 (2025+) 3.0 TFSI V6 EA839 - App Controlled CANbus Module

£908.70
£908.70
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Heads-up on cancellations & returns: if you cancel an order or return an item, you won't get back 100% of what you paid. We apply a 10% restocking fee, the outbound shipping is non-refundable, and we have to pass on Shopify / PayPal payment processing fees; these aren't returned to us when we refund you. International orders also lose on exchange-rate spread in both directions. If the original packaging is damaged or missing, a reboxing charge applies. For international orders specifically, if you refuse to pay our shipping invoice or supply a prepaid label after placing the order, the same deductions apply. We're upfront about this — please be sure of your purchase before ordering.

Unlock serious performance from your 2025 onwards Audi B10 S5 or SQ5 with the JB4 plug and play tuning system. Designed for the 3.0L EA839 turbocharged V6, this app-controlled piggyback tune delivers powerful gains and seamless daily drivability, with on-the-fly map switching and full CANbus integration. On a completely stock car running pump fuel, customers typically see up to 70 hp at the wheels, around 85 hp at the crank, with even greater results possible when paired with higher octane, ethanol blends or supporting bolt-ons.

  • Up to 70 whp on a stock vehicle on pump fuel, approximately 85 hp at the crank
  • Quick plug and play installation with no other modifications required
  • Preloaded Audi B10 JB4 software with up to 8 maps and in-dash switching between stock and performance maps
  • Boost by gear control for improved traction and launches in the lower gears
  • JB4PRO app included for iOS and Android to log up to 20 parameters, change maps, clear fault codes and update firmware
  • Ethanol compatible mapping up to E30, with 91 octane or better required for performance gains
  • Full CANbus OBDII integration for smooth, factory-like operation while retaining OEM safety systems
  • Works with all driving modes and fuel economy remains unchanged during normal driving
  • Not VIN-locked and removable without a trace, making it easy to transfer or resell
  • Designed and assembled in the USA with a 5 year warranty

Fitment:

  • Audi S5 2025 onwards B10 3.0L EA839 turbocharged V6, including Avant
  • Audi SQ5 2025 onwards B10 3.0L EA839 turbocharged V6, including Sportback

What is the JB4? It is a sophisticated plug in tuning module that interfaces with key engine sensors and the vehicle CANbus to optimise boost, timing, AFR and fuel trims similarly to an ECU reflash, but without unlocking or flagging the ECU. You get safe, significant power and torque gains, smartphone adjustability and regular free map and firmware updates, all while keeping factory safeguards intact.

Nforcd knows this upgrade well and it has been a popular choice for Audi 3.0 TFSI owners seeking a fast, reversible performance boost without a flash tune. Order online today for rapid UK delivery. Professional fitting is available at Nforcd in Warwickshire. To request a quote, email Sales@nforcd.com.